U.S. Military Claims Detainees Were Linked to Attacks on American and Allied Troops

KABUL—The Afghan government on Thursday released 65 detainees the U.S. military says are directly tied to attacks on American and allied troops, a move that threatens to imperil U.S. aid to Afghanistan and worsens already rocky relations with Kabul.

U.S. officials have been urging Kabul not to free a group of suspected insurgent detainees, saying...